Oil-stove



(MMM) M. G. BENBDIGT.-

OIL STOVE.

No. 486,063. Patented Nov. 8, 1892.

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I UNITED STATES PATENT "OFFICE,

MAURICE G. BENEDICT, OF DETROIT, ASSIGNOR TO THE COLDWATER OIL STOVE COMPANY, OF COLDWATER, MICHIGAN.

OIL-STOVE.

SPECIFICATIONforming part of Letters Patent No. 486,063, dated November 8, 1892. Application filed January 2, 1892-` Seria1No.416.767. (No model.)

To @ZZ whom it may concern.-

Be it known that I, MAURICE G. BENEDICT, a citizen of the United States, residing at Dctroit, county of Wayne, State of Michigan, have invented a certain new and useful Improvement in Oil-Stoves; and I declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it pertains to make and use the same, reference being had to the accompanying drawings, which form a part of this specification.

This invention relates to oil-stoves, and has for its object an improvement in the flues by means of which a constant circulation of fresh air is carried through the stove in contact with highly-heated parts of the stove and thence dispersed throughout the part to be warmed.

The production of a rapid circulation in the air receiving heat from the burner of a stove tends to disperse the heat and equalize the warmth of the apartment within which the stove is located and renders useful in a high degree the heating qualities of the stove. I produce such circulating air by means of the combination of burner and lues shown in the accompanying drawings, in which- Figure l shows in vertical cross-section the complete stove. Fig. 2 shows in horizontal cross-section-at the line :rw the arrangement of parts comprising the burner and oil-tank surrounding it. Fig. 3 shows the conical terminal flue within which the fresh air passes. and is heated.

A represents the base of a stove with walls a d extending upward nearly to the height of' the burner B. Above the side walls a of thel base A other inclosing walls b b and c-are continued upward as high as may be necessary to inclose all the necessary parts, the walls a, b c being fashioned either plain or in any pleasing or ornamental design. Within the inclosing walls ct of the base is an oil-tank T, having a central perforation within which rests the burner and its adjuncts. The tank T is preferably separated from the Walls a by a narrow air-space t and is separated from the walls of the burner by an air-space t', and within this come in order a tubular wall F, an air-space f for feeding air to the flame, a

wick-tube w with double Walls W W', an airspace g, adapted to feed air to the interior of the iiame, and a water-tank G. These parts are arranged and constructed in the ordinary way, and they support above the flame the deflecting-ring D and the deiiecting-plate d, between which the flame from the burner B passes out into the combustion-chamber K.

The combustion-chamber K forms the central part of the stove. At the upper end of the combustion-chamber K, through the plate or ring H, that forms the partition or division between the central part and the upper part of the stove, is an opening or passage-way k. Within the upper part of the stove and above the opening 7c is the inner wall of a conical iiue E. The conical tlue E consists of an outer and an inner cone e e', united at their base by a perforated ring c2. at its top to permit the passage out from it of the air coming into it `through the perforationsp in the bottom ring. I prefer to have four of these entering pipes or perforations, although the number may be more or less to correspond with the contour or design of the stove adopted. The short pipes p form legs or supports that hold the double cone E a short distance above the plate H, leaving openings t beneath the base e2 and between the pipes p, through which the products of combustion rising from the combustion-chamber K can pass into the outer portion C of the upper compartment and thence through openings c to the outer air. A n p rest in or register with short iiues or pipes p2, that pass from top to bottom through the middle chamber and at their bottom ends rest on or register with the upper ends of lines 193, reaching to the base part of the stove vbelow the oil-tank and terminating in bell-mouthed or funnelshaped openings m. The upper end n of each flue p3 is perforated through the space above the oil-tank. The flue itself passes through the oil-tank, and the draft of cool air passing through it tends to keep the oil cool.

The operation of the stove is as follows: When the burner is lighted, the heated products of combustion and heated air rise through the month kof the combustion-chamber into the cavity beneath the conical face The outer cone is perforatedv The short pipes IOO eof the flue Il. It being impossible for them to rise up through this cone, they are deflected and pass down through the openings h into the chamber C and thence into the outer room. In making this travel, however, they heat the plate c to a high degree and thc air between e c becomes highly heated and rises upward, producing a constant inflow of fresh or cold air through the pipes p2 193. The rising current of air through p3 causes the air above the oil-tank T to pass through the perforations n and produces a circulation around the oil-tank, thus aiding in keeping it cool. As the rising air passes out from the pipe p into the interior of the double cone E it nds an opening much more extended than either the exit e3 or the sum of the entrance-openings p, and consequently the movement of the air is delayed for a short time while in contact with the heated surface of the cone-plates e e', thus allowing it time to take up the heat from those plates before it moves forward, and thus causing the air on its exit to be more highly heated than it otherwise would.

The combustion-chamber K directs the heat centrally upward, compelling it to seek the interior apex of the cone before turning to escape through the openings h.

Having thus described my invention, what. I claim as novel, and desire to have secured to me by Letters Patent, is-

1. In an oil-stove, the combination of a burner, a combustion-chamber surrounding said burner, a heating-drum above the combustion-chamber, a centrally-perforated partition separating said combustion-chamber from said heating-chamber, a double cone located Within the heating-drum and having air-inlets at its bottom leading into the space between the walls of said cone and an airoutlet opening atits apex7 and flues connecting the inlet-openings with the space beneath the stove, substantially as and for the purpose specified.

2. In an oil-stove, the combination of a burner, an oil-tank, an air-space being formed above the oil-tank, a iiue passing through said oil-tank, terminating at its lower end in a bell-mouth and provided at its upper end with perforated side walls,and aflue extending above the combustion-chamber from the upper end of said first-mentioned fiue and communicating with the outer air and adapted to form a communication through the said perforated side walls between `the open air- Space above the oil-tank and the air external to saidstove,.substantially as and for the pur pose specified.

3. In an oil-stove, the combination of a burner, a combustion-chamber surrounding said burner, a heating-drum above said combustion-chamber, acentrally-perforated plate dividing the combustion-chamber from the heating-drum, a conical chamber above the combustion-chamber, situated Within the heatin g-drum, having double walls and an interior space between said Walls, and a passage-Way beneath the walls of said double cone, adapted to permit the exit of the heated products of combustion that rise through the perforated plate and to permit such heated products to pass into the heating-drum external to said coned chamber, substantially as and for the purpose described.

fl. In an oil-stove, in combination with the burner, a combustion-chamber surrounding said burner, a heating-chamber, a conical chamber Within the heating-chamber, a perforated plate separating the heating-chamber 'from the combustion-chamber, an oil-tan k, and cold-air flues extending through said oiltank from the bottom of the stove and terminating in said conical chamber, 'substantially as and for the purpose specified.

5. In an oil-stove, in combination with a burner, a combustion-chamber, a beatingchamber, a centrally-perforated plate separating said combustion-chamber from said heating-chamber, and an interior heatingchamber with double conical walls, supported on and spaced from the said plate and having an interior conical cavity beneath' it and above the central perforation of said plate,

substantiallyasand for the purpose described..

G. In an oil-stove, in combination with a burner, a combustion-chamber surrounding said burner, a centrally-perforated plate terminating said combustion-chamber at its upper extremity, a conical chamber having double walls, and a space between said walls, supported above and spaced from saidcent-rally-perfo rated plate, the said conical chamber being provided with inlet-fines at its base and an outlet-opening at its apex, substantially as and for the purpose described.

ln testimony whereof I sign this specification in the presence of two witnesses.

MAURICE G. BENEDIGT.

IVitnesjses:

E. F. SWEET, EFFIE I. @Roer IOC 

